Lead-holder for pencils



(No Model.)

J. HOLLAND.

d'LEAD HOLDER PORPBNC'ILS. y No.. 292,313. 1 Patente.d Ja11`.-22, 1884.

. N. PETERS Pnglwwhngnpiur. wnhinmun. uc.

UNITED STATES PATENT OFFICE.

VJOHN HOLLAND, OroINo-INNATI, OHIO.

LEAD-HOLDER FOR PENciLs.

SPECIFICATION forming part of Letters Patent No. 292,313, dated .Tanuary22, 1884. .L Application filed March 18, 1882. (No model.)

' hold the lead or crayon in pencils from slipthe lowerrend of the tubebefore it is slotted,

ping back withinA the tube when pressed upon bythe act of writing,without danger of break- .ing the lead.

Lead-tubes now in common use are usually slotted at the lower end toform elastic clamping-fingers, which ngers are closed upon thelead,`near its point end by a sleeve or tube which moves longitudinallyover the fingers. These fingers are either smooth upon the inside, orterminate at their ends in sharp inward projections or claws. The firstkind soon become so smooth that the lead slips back when borne upon inthe act of writing, and the second frequently breaks the lead when theclamping-sleeve is tightened up, and when tightened up carefully thelead often breaks in use, when writing with the pencil inclined. Iovercome both of these objections by making ayine screw-thread within toform the clamping-fingers.

In the accompanying drawings, Figure l is an elevationof the lead-tube,detached from the case, and having the clamping-sleeve in position. Fig.2 is a'central vertical section of the lower part of the case and thelower end of. the slotted leadtube. The upper portion of .the case andthe lead-tube are shown iii elevation. Fig. 3 is a longitudinal centralsection of the lower `part of the lead-tube, greatly enlarged.v In thisview, as in Fig. 2, the clamping-sleeve is removed. The leadtube A isprovided with three" collars, b, c, and d.

To the collars c and b is secured a tube, B, and upon this is securedthe outer nish of the case, as follows: The perforated lower cap, O, issoldered or other-wise suitably'secured upon the lower end Qf said tubeB. The outer shell, D, is slipped over tube Buntil it strikes the lowercap, leaving the upper end of said tube B exposed to receive the cap E,which is slipped down against the upper vend of tube serew-threaded uponthe inside, be serrated or roughened to accomplish the same result;

but the screw-thread is much better, because by this means auniformly-even roughene'd surface can be made within the lower end ofthe tube at-comparatively small expense; and,

Aas these pencils are designed to take the place of the commonlead-pencil, they must be made cheaply to insure their int-roductioninto general use.

I am aware that it is old toprovde a pencil-case for holding ordinarylead-pencils with a sliding ring, to which aresecured spring` clampshaving their holding-surfaces serrated, and having their shanks bent toapproach each other, then jut outwardly'and downwardly at their freeends, so that a ring-slide may be moved upon said shanks to cause thefree ends of the clamps to grasp or release a pencil; and I ain alsoaware that it is old to provide the lead-holding tube of a pencil withan interior thread and a single slot. I therefore do not claim either ofthese devices.v

I claim as my inventionl. As a new article of manufacture, a leadtubefor pencils consisting, substantially as before set forth, of a tubeprovided at one end with internal or female threads and two or morelongitudinal slots to form threaded Iingersf I 2. The combination, withthe lead-tube provided at one end with internal threads and two or morelongitudinal slots, of a clampingsleeve adapted to be adjusted upon theslotted end of the tube to press the threaded :lingers upon a lead,substantially as described.

JOHN HOLLAND.

Witnesses:

M. W. OLIVER, .GEO.'.I. MURRAY.

